Ventilator.



No. 787,882 PATENTED APR. 18, 1905.

S. H. JAOOBSON.

VENTILATOR.

APPLICATION TILED D120. 23. 1903.

2 SHEETS-SHEET 1.

Jig]

a e e a a Q a a cc a a a QR/Mums e0 1 34mm 1H0 r 4/ I Jamudlyouaianelzmhon Gav/4M 6 No. 787,882. PATENTED APR. 18, 1905. S. H. JAOOBSON.

VENTILATOR.

APPLICATION FILED D130. 23, 1903.

2 BHEETSSHEET 2- Jay;

UNTTED STATES Patented April 18, 1905.

PATENT OFFICE.

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 787,882, dated April 18, 1905.

Application filed December 23, 1903. Serial N0.186,404.

To (11/ whom it may concern:

Be it known that I, SAMUEL HOUSTON JACOB- sox, a citizen of the United States, residing at New York city, State of New York, have invented certain new and useful Improvements in Ventilators, of which the following is a specilication.

My invention is designed for the production of an improved ventilator, the same being especially designed for use upon railway-cars, street-cars, and other moving vehicles, although it is capable of and intended for use upon stationary building structures.

The object of the invention is to provide novel means for utilizing the current caused by the movement of the car to create an outward suction of foul air from the space or apartment to be ventilated which dispenses with the use of movable parts, such as valves.

Other objects of the invention will hereinafter appear.

The invention consists of a casing having its ends open, a chamber within said casing having a closed top, said chamber opening on one side to the space to be ventilated and on the other side, through perforations, to the said casing, and deflectors at the ends of said chamber.

The invention also consists in certain features and details of construction and combinations of parts, which will be hereinafter more fully described and claimed.

1n the drawings forming part of this specification, Figure 1 is an elevation of a ventilator constructed in accordance with my invention. Fig. 2 is a cross-section ofthe same. Fig. 3 is an end view. Fig. stisalongitudinal section on the line it 4 of Fig. 3. Fig. 5 is a longitudinal section of a modified construction. Fig. 6 is a cross-section, and Fig. 7 is an end view of the same.

Like re ference-numerals indicate like parts in the different views.

-.\[y improved ventilator is made up of an outer hood or casing 1, a perforated web 2, secured within said casing and forming, with the upper wall thereof, an interior chamber 3, which communicates, through an opening 4., with the interior of the car or other space to be ventilated, and angularly-arranged deflectors 5, secured within said casing at each end thereof and closing or cutting off the ends of said chamber.

The casing 1 has been shown as consisting of a central rectangular body 6 and expanded or funnel-shaped ends 7, both ends of said casing being open to provide a free passage therethrough. The said casing may be socured in place in any suitable manner. In the drawings it has been shown as secured to a base-board 8, and the opening 4, has been illustrated as being formed in said baseboard. The web 2 is constructed of sheet metal, and the perforations 9 therein are preferably formed by punching, so as to produce the outwardlyextending burs or projections 10. The said web is secured along its upper edge to the top wall of the body 6 of the casing and along its inner edge adjacent to the lower edge of the opening i. The same is transversely curved, as shown, although the iongitudinal lines thereof are parallel to the ad jacent walls of the casing. From its point of connection with the top wall of said casing the web extends downwardly and outwardly toward the outer or side wall of said casing.

It is bent at a point opposite the lower outer corner of said casing and then extends upwardly and inwardly to the lower edge of the openings in the base-board b. The points ll l2 13 of the space within the casing 1 outside the web 2 are thus of greater area than the intermediate points.

The ends of the chamber 3, formed by the web 2, are closed by the deflectors These deflectors, as heretofore stated, are located at each end of the casing within the space embraced by the expanded or funnel shaped ends 7. Each of said deflectors is transversely curved or bent and extends from the upper inner corner of the casing 1 downwardly and longitudinally toward the end of the web 2, the same merging into said web without angular abruptness or sudden change in direction.

It will of course be understood that the easing 1 is located on the outside of the car. Consequently when the car is in motion a current of air is caused to pass through said casing. This first strikes one of the deflectors 5 and the adjacent expanded or funnel-shaped end 7, these two parts cooperating to cause a compression of said air, and then passes through the casing 1 outside the web 2. An outward current or suction is thus produced from the chamber 3 through the perforations 9 in said web, which draws the foul or vitiated air from the car through the opening 4. Dust, cinders, or other foreign particles are prevented from entering the chamber 3 by the imperforate portions of the Web 2 and by reason of the fact that there is an outward cur rent of air from said chamber. This action is still further facilitated by the outwardlyextending burs or projections 10, which surround the openings 9. Furthermore, the current of air outside said web 2 is so strong that it will carry any foreign substances contained therein rapidly past the perforations 9. The enlarged portions 11 12 13 of the space outside the web 2 are to accommodate any increase in the pressure of the external air at the places where it is most likely to occur.

It will be observed that in my improved device there are-no moving parts which will tend to rattle or get out of order, and, further, that there'are no horizontal portions or ledges about the web 2 upon which dust, cinders, leaves, or other foreign particles can lodge. The upper side of the chamber 8 is closed entirely by the top wall of the casing 1, and the perforations 9 are formed in said web 2 only on the side and bottom portions thereof. Consequently any dust or cinders which might enter at one end of the casing 1 would be swept or carried entirely therethrough without danger of gaining entrance to the chamber 3.

It will also be observed that the deflectors 5 and the inclined Walls of the expanded ends 7 are so disposed with respect to each other that they cooperate to compress the air from opposite sides, so that said air is caused to pass directly through the casing 1 in a line parallel with the walls of the body 6 thereofthat is to say, there is no deflection of the air after it enters the body 6, and consequently there can be no tendency for any foreign particles to enter the chamber 5 through the perforations 9.

1n the form of my invention shown in Figs. 5, 6, and 7 of the drawings the chamber 3 is formed by a web 2 of perforated material,

which extends from the top wall of the body 6 of the casing to the bottom wall thereof,

and the ends of said chamber are closed or cut ofl by the inclined deflectors 5, which are located within the expanded ends 7 and extend from the upper to the lower inner corner thereof. The operation of this form of the device is the same as that above described.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A ventilator comprising a casing having its ends open, a chamber within said casing having a closed top, the said chamber opening on one side to the space to be ventilated and on the other side, through perforations, to the said casing, and deflectors at the ends of said chamber.

2. A ventilator comprising a casing having its ends open, a chamber within said casing having a closed top, the said chamber opening on one side to the space to be ventilated and on the other side, through perforations, to the said casing, and angularly-arranged deflectors secured in the ends of said chamber.

3. A ventilator comprising a casing having a longitudinal passage therethrough, a perforated web extending from the top to one of the side walls of said casing and forming therein a chamber which communicates with the space to be ventilated, and deflectors at the opposite ends of said chamber.

4:. A ventilator comprising a casing having a longitudinal passage therethrough and having expanded or funnel-shaped ends, a perforated web secured along its upper edge to the top wall of said casing and forming a chamber which communicates with the space to be ventilated, the side and bottom walls of said chamber being separated from the adjacent walls of said casing, and deflectors secured at the upper inner corners of said casing, extending downwardly and longitudinally therefrom and merging into and closing the ends of said chamber.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SAMUEL HOUSTON JACOBSON.

WVitnesses:

WM. M. STOCKBRIDGE, ROBERT THOMPSON. 

